body {
    margin: 0;

}
#all{
    margin: 0 auto;
    width: 1200px;
    height: 800px;
}
#all .top{
    margin: 0;
    width: 1200px;
    height: 88px;
    background-image: url("../images/topbg.gif");
}
#all .top .left{
    margin: 0;
    float: left;
}
#all .top .right{
    margin: 0;
    float: right;
}
#all .center{
    float: left;
    width: 1200px;
    height: 712px;
}
#all .center .left{
    margin: 0;
    float: left;
    width: 300px;
    height: 712px;
    background-image: url("../images/libg.png");
}
#all .center .right{
    margin: 0;
    float: left;
    width: 900px;
    height: 712px;
    background-color:#066cae ;
}
#all .center .right .middle{
    margin: 200px 200px;
    width: 300px;
    height: 300px;

}